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Treachery vs Perfidious - What's the difference?

treachery | perfidious |

As a noun treachery

is deliberate, often calculated, disregard for trust or faith.

As an adjective perfidious is

of, pertaining to, or representing perfidy; disloyal to what should command one's fidelity or allegiance.

treachery

English

Noun

(treacheries)
  • Deliberate, often calculated, disregard for trust or faith.
  • The act of violating the confidence of another, usually for personal gain.
  • Treason.
  • Synonyms

    * Punic faith * treacherousness

    Derived terms

    * treacher * treacherous

    perfidious

    English

    Adjective

    (en adjective)
  • Of, pertaining to, or representing perfidy; disloyal to what should command one's fidelity or allegiance.
  • * 1610 , , act 2 scene 2
  • *:TRINCULO (speaking about ): By this light, a most perfidious and drunken / monster: when his god's asleep, he'll rob his bottle.
  • * 1851 , , Dr. Goldsmith's History of Rome (ed. William C. Taylor), ch. 26:
  • The perfidious Ricimer soon became dissatisfied with Anthe'mius, and raised the standard of revolt.
  • * 1905 , , John Knox and the Reformation , ch. 14:
  • [S]he knew Huntly for the ambitious traitor he was, a man peculiarly perfidious and self-seeking.
  • * 2005 June 21, , " Art: The Velocipede of Modernism," Time :
  • When the Nazis branded Feininger a "degenerate artist" in 1937, he left 54 paintings for safekeeping with a Bauhaus friend named Hermann Klumpp. After the war, and for the rest of Feininger's life, the perfidious Klumpp refused to give them back.

    Synonyms

    * (disloyal) disloyal, traitorous, treacherous, unfaithful

    Derived terms

    * perfidiously * perfidiousness